Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 24 for “"Cardiac imaging"”.
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Estimation of dynamically evolving ellipsoids with applications to cardiac imaging
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1992.
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The Role of Cardiac Imaging in Deep Phenotyping Patients with Cardiomyopathy
… half of HF patients, can be a primary cause of cardiac dysfunction and has also been identified as an important disease modifier in TTNtv-related DCM. However, the mechanisms linking obesity and cardiomyopathy need further investigation. The first project within this thesis utilised advanced CMR …
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Manganese porphyrin for Synthesis of Targeted Contrast Agents for Improving Specificity in Cardiac Magnetic Resonance Imaging
Specificity in imaging narrows our view from the physical anatomy of damaged tissues, to imaging the processes behind it. These are the benefits provided by nuclear medicine in oncology, whose contrast specificity is provided by chelated radionucleotides whose pharmacokinetics are controlled by a …
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Analysis of Cartesian and projection (K,T)-space sampling patterns when using the partially separable functions model for cardiac perfusion MR imaging
Cardiac perfusion MRI aims to analyze perfusion characteristics of the heart through the injection of a contrast agent. In clinical practice, cardiac perfusion imaging is used to diagnose ischemic myocardial tissue, coronary artery disease, and, to a lesser extent, myocardial infarctions. To …
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Four-Dimensional Cardiac Magnetic Resonance Analysis in Patients with Atrial Fibrillation
Atrial fibrillation (AF) is a common cardiac arrhythmia characterized by disorganized electrical activity leading to irregular contractions and impaired cardiac output. AF significantly elevates the risk of thromboembolic stroke, primarily due to thrombus formation in the left atrium (LA) and left …
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Improving Cardiovascular Risk Assessment with CT Coronary Angiography and Myocardial CT Perfusion
… both high temporal-resolution tissue Doppler imaging and CT. The period of mid-diastole was found to occur relatively later in the cardiac cycle with increasing heart rate. The study demonstrated the importance of heart rate control and precise timing in cardiac imaging. The coronary calcium …
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Determinants and Monitoring of Response to Disease-Modifying Therapy for Transthyretin Amyloidosis Cardiomyopathy: The ATTR-CM Therapy Study
… included 145 ATTR-CM patients followed by the Cardiac Amyloidosis Clinic, at the Libin Cardiovascular Institute (UofC). The results presented in this thesis contribute to an evidence-based approach for determining and monitoring the response to tafamidis therapy in ATTR-CM patients. The study …
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Technical Development of Hyperpolarized [1-13C]Pyruvate Imaging for Clinical Translation
Magnetic resonance imaging with hyperpolarized [1-13C]pyruvate is an emerging tool for assessing in vivo metabolism noninvasively. Over the past few years since the first clinical study with prostate cancer patients, translational studies using this imaging technique have been focused on …
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DIGITAL ANALYSIS OF CARDIAC ACOUSTIC SIGNALS IN CHILDREN
DIGITAL ANALYSIS OF CARDIAC ACOUSTIC SIGNALS IN CHILDREN Milad El-Segaier, MD Division of Paediatric Cardiology, Department of Paediatrics, Lund University Hospital, Lund, Sweden SUMMARY Despite tremendous development in cardiac imaging, use of the stethoscope and cardiac auscultation remains the …
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Rhabdomyolysis-induced Acute Kidney Injury in Sickle Cell Disease
… mice showing more significant increases. In vivo cardiac imaging showed that glycerol-induced rhabdomyolysis caused mild yet expected cardiac effects that were not anticipated to confound the severity of rhabdomyolysis-induced AKI. Rhabdomyolysis was shown to aggravate hemolysis parameters in SS, …
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Fast MRI with sparse sampling: models, algorithms, and applications
Conventional magnetic resonance imaging (MRI) methods are based on the Shannon-Nyquist sampling theorem. The number of required Nyquist samples grows exponentially with respect to the underlying physical dimension of the imaging problem, resulting in significant difficulty of achieving high …
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Advanced Applications of Cardiac Computed Tomography for the Difficult-to-Image Patient
… the development of computed tomographic (CT) imaging the challenges of capturing the heart, with its perpetual, vigorous motion, and in particular the tiny detail within the coronary arteries, has driven technological progress. Today, CT is a widely used and rapidly growing modality for the …
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Funktionelle kardiale Phasenkontrast MRT, Entwicklung und Erprobung von Phasenkontrast-Methoden zur Darstellung und Beurteilung von Bewegungsabläufen am menschlichen Herzen.
Im Rahmen der Promotion stand die Entwicklung, Implementierung und Erprobung von NMR-tomographischen Meßsequenzen zur funktionellen Herzuntersuchung im Vordergrund. Ziel des Projektes war es, ein zuverlässiges und robustes Instrumentarium zum Einsatz in der Patientenroutine zu schaffen. Aufgabe war …
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Magnetic Resonance Imaging of the Heart and Vasculature at 3 Tesla: Novel Strategies for the Diagnosis and Risk Stratification of Cardiovascular Disease
… study the effects of field strength and parallel imaging on image contrast and the interstudy reproducibility of right and left ventricular (RV and LV) measurements using steady-state free precession (SSFP) cardiac magnetic resonance; (2) to explore the impact of 3T parallel imaging techniques on …
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Acoustic Radiation Force Impulse Imaging of Myocardial Performance
… States. In order to diagnose and detect certain cardiac diseases, it is necessary to assess myocardial performance and function. One mechanical property that has been shown to reflect myocardial performance is myocardial stiffness. Acoustic radiation force impulse (ARFI) imaging has been …
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Distortion-optimal parallel MRI with sparse sampling: from adaptive spatio-temporal acquisition to self-calibrating reconstruction
… that pertain to parallel magnetic resonance imaging (pMRI). The first part of this dissertation addresses adaptive design of spatio-temporal acquisition and reconstruction in model-based pMRI wherein the signal model is a sparse support. We develop a highly-accelerated real-time dynamic MRI …
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A subspace approach to accelerated cardiovascular magnetic resonance imaging
"Magnetic resonance imaging (MRI) is a uniquely flexible tool for imaging the heart, as it has the potential to perform a significant number of structural and functional cardiovascular assessments. However, the low imaging speed of MRI has limited its clinical application. The assessments that are …
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Using B-type natriuretic peptide and whole body contrast enhanced magnetic resonance imaging to detect asymptomatic cardiovascular disease and improve prediction of risk of cardiovascular disease: the TASCFORCE Study
… whole body contrast enhanced magnetic resonance imaging (MRI) could identify those at low/intermediate risk or disease who will develop clinical disease and thus facilitate improved targeting of primary prevention at those most likely to benefit.<br/><br/>The Tayside Screening for Cardiac Events …
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Myocardial Perfusion Imaging With Rb-82 PET
Myocardial perfusion imaging (MPI) is an effective technique used to study the left ventricular ejection function (LVEF), myocardial perfusion, wall motion, and wall thickening. Positron emission tomography (PET) and single photon emission computed tomography (SPECT) are two modalities that can be …
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